### Data from Momigliano et al. Evol App paper "Cryptic temporal changes in stock composition explain the decline of a flounder (Platichthys spp.) assemblage" ### Environmental data (reproductive volume, RV), Proportion of P. flesus in the cath and commercial landings (t/y) in the Golf of Finland ### Year= birth year of samples (estimated as sampling year - fish age determined from otolith readings) ### RV(Jan-Feb)= Average reproductive volume in the Eastern Gotland Basin in January-February (Data from Ustups et al. 2013, J Sea Res 75: 77-84) ### RV(Mar-Apr)= Average reproductive volume in the Eastern Gotland Basin in March-April (Data from Ustups et al. 2013, J Sea Res 75: 77-84) ### RV(May-Jun)= Average reproductive volume in the Eastern Gotland Basin in May-June (Data from Ustups et al. 2013, J Sea Res 75: 77-84) ### RV(Jul-Aug)= Average reproductive volume in the Eastern Gotland Basin in July-August (Data from Ustups et al. 2013, J Sea Res 75: 77-84) ### %P.flesus(ALA)= Proportion of P. flesus in the Western Ă…land Sea ### %P.flesus(GoF)= Proportion of P. flesus in the Gulf of Finland ### Landings(SD32)= Commercial flounder landings in the Gulf of Finalnad (t/y) from: ICES (2017). Report of the Baltic Fisheries Assessment Working Group (WGBFAS), 19- 601 April 2017, Copenhagen, Denmark. ICES CM 2017/ACOM:11. 810 pp. Year RV(Jan-Feb) RV(Mar-Apr) RV(May-Jun) RV(Jul-Aug) %P.flesus(ALA) %P.flesus(GoF) Landings(SD32) 1970 401.15 401.59 90.48 0 0.176470588 NA NA 1971 29.maalis 30.16 130.16 202.38 0.4 NA NA 1973 933.23 931.75 488.89 234.14 NA 1 1117 1974 279.18 188.89 182.54 17.36 NA 0.882352941 1117 1975 66.25 134.13 346.03 0 NA 0.96 1117 1977 748.93 809.52 647.62 0 0 0.818181818 1117 1978 328.86 0 331.75 0 0.045454545 0.923076923 1117 1979 90.04 166.67 319.05 431.4 NA 0.727272727 1117 1986 199.02 198.41 43415 0 0.047619048 0 51 1987 0 43239 19238 0 0 0 51 1997 223.45 235.26 152.39 0 0 0.086956522 128 1998 0 247.92 127.64 109.31 0.041666667 0.125 128 2006 NA NA NA NA NA 0.12 83 2007 NA NA NA NA NA 0.084 83